Question

which sentence describes an example of how a living thing might grow and develop?
○ a. a fire spreads through a forest.
○ b. a single cell divides into multiple specialized cells.
○ c. a worm moves away from light.
○ d. a rock breaks into multiple pieces as it rolls downhill.

Explanation:

Growth and development in living things involve increases in size and specialization. Option A (fire) and D (rock) are non-living; option C is a response to stimulus (not growth/development). Option B describes cell division and specialization, which is key to growth and development.

Answer:

B. A single cell divides into multiple specialized cells.